{
  "request": {
    "method": "POST",
    "url": "https://api.telefoon.com/v1/voice/calls",
    "headers": { "X-API-Key": "YOUR_API_KEY", "Content-Type": "application/json" },
    "body": {
      "to": "+31201234567",
      "from": "+31851234567",
      "url": "https://your-app.example.com/call-webhook",
      "tts_language": "nl-NL",
      "record": false,
      "timeout": 30
    }
  },
  "response": {
    "id": "CA1234abcd5678efgh1234abcd5678efgh",
    "status": "queued",
    "direction": "outbound",
    "from": "+31851234567",
    "to": "+31201234567",
    "start_time": null,
    "end_time": null,
    "duration": null,
    "price": null,
    "price_unit": "EUR"
  }
}